depende siguro sa kotse, pero here's mine (Forester XT owner's manual)

The performance and long life of your vehicle are dependent on how you handle and care for your vehicle while it is new. Follow these instructions during the first 1,000 miles (1,600km):

-do not race the engine, and do not allow engine speed to exceed 4,000rpm except in an emergency.
-do not drive at one constant engine or vehicle speed for a long time, either fast or slow.
-avoid starting suddenly and rapid acceleration, except in an emergency.
-avoid hard braking, except in an emergency.

like i said, it takes patience and discipline.

IMO mas maganda sigurong mag-break in sa highway kasi nako-control mo yung engine or vehicle speed, whereas sa city, pag na-stuck ka sa traffic, you'd be in idle forever.